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a) The Hantek 6022BE does not have the Logic Analyzer built in and the PCB has spare
positions without the components. The Hantek 6022BL has the Logic Analyzer
installed, but only one of the two devices can be used at a time.
b) The firmware is not situated on the PCB, but is loaded from the driver every time the
oscilloscope is connected to the PC.
c) The PCB does not have proper metal screening over the components although the
board has been designed for screening cans to be fitted. These can be retrofitted to
reduce noise. Base line noise is about 5mV in this state.
d) Some users have inspected the device and have provided the following observations,
which may be of interest to some.
The key components are as follows:
i.
Microcontroller CY7C68013A-100AXC Cypress EZ-USB FX2LP USB 8/16 bit
16KB memory
ii.
EEPROM 24LC02 2048 bits (2K)
iii.
ADC (Analog to Digital Converter) AD9288BSTZ-40 Dual Channel with glued on
heat-sink.
iv.
HRA Amplifiers 2 Analogue input channels. Each channel containing 2
cascaded 74HC4051, 5 pin 'HRA' amplifiers and a 3 pin fast switching dual
rectifier A7 device.
v.
Regulator AMS1117 3V3.
vi.
There are positions on the PCB for a 16 channel Logic Analyzer, using another
CY7C68013A-100AXC, 24LC02 and a SMSC USB2512A USB Hub. The complete
unit can be purchased as the Hantek 6022BL which has the logic analyzer
installed.
vii.
There is also a position for a 5V supply. Interestingly, the only components
needed are a socket and a diode. There is no polyfuse in the external supply rail
unlike the USB feed. The unpopulated components opposite the front end are
for an alternate isolated supply for the front end. They are using an LTC3440
Buck regulator for the +5V and a classic 7660 Charge Pump for the -5V supply.
The question remains, why is it there if they already have an isolated DC-DC
supply (specifically a Mornsun A0505S-2W)?
viii.
The screening cans have not been fitted over the input amplifiers but the PCB
has positions for such. This may explain some of the noise issues that are
reported but it could be other factors as well.
V1.0b19 2014/12/21
OPEN6022BE User Manual
Page: 18